Start Publications Ovalbumin at oil-water interfaces: Adsorption and emulsification
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Ovalbumin at oil-water interfaces: Adsorption and emulsification

Year: 2018

Journal: J. Dispersion Sci. Technol., Volume 39, page 1126–1133

Authors: Panjwani, Bhawna; Gupta, Sharad; Thareja, Prachi

Organizations: IIT Gandhinagar

Keywords: Emulsions; interface; ovalbumin; proteins; rheology

In this article, we study the adsorption of protein ovalbumin (OVA) at corn oil (CO), soybean oil (SBO), olive oil (OO), and water interfaces along with the emulsification of these oils in water. The dynamic interfacial tension (IFT) measurements show a reduction in IFT in the order SBO-water approximate to CO-water>OO-water, with OVA adsorption being dominated by the free diffusion of OVA at the interfaces. CO-water, OO-water, and SBO-water emulsions cream with time. The cream phase consists of jammed closed-packed oil droplets due to depletion-induced inter-droplet attractions with higher G and G (approximate to 700Pa) for emulsions with 1wt% OVA. [GRAPHICS] .